:root{
  --ink:#0d1b2a;
  --ink-soft:#44525f;
  --bg:#ffffff;
  --bg-alt:#f3f6f8;
  --line:#e1e7ec;
  --accent:#00a7cd;       /* z loga */
  --accent-dark:#007c99;  /* text/odkazy na bielej (kontrast) */
  --night:#0b1b2b;
  --radius:14px;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
img{max-width:100%}
a{color:var(--accent-dark)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:750}
h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:700}
h3{font-size:1.2rem;font-weight:650}
.eyebrow{display:block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-dark);margin-bottom:.8rem}

/* header */
header.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:76px}
header.top img{height:52px;display:block}
nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;margin-left:26px}
nav a:hover{color:var(--accent-dark)}
nav a.cta{background:var(--ink);color:#fff;padding:9px 18px;border-radius:999px}
nav a.cta:hover{background:var(--accent-dark);color:#fff}

/* hero */
.hero{position:relative;background:var(--night);color:#fff;overflow:hidden}
.hero .wrap{position:relative;z-index:1;padding-top:104px;padding-bottom:112px}
.hero h1{max-width:15ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.lead{max-width:56ch;font-size:1.2rem;color:#c3d0db;margin:1.2rem 0 2rem}
.hero .eyebrow{color:var(--accent)}
.hero svg{position:absolute;right:-60px;top:0;height:100%;width:60%;opacity:.9}
.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:650;text-decoration:none;margin-right:12px}
.btn.primary{background:var(--accent);color:#04202a}
.btn.primary:hover{background:#2cc4e6}
.btn.ghost{border:1px solid #4b6479;color:#fff}
.btn.ghost:hover{border-color:#fff}

/* sections */
section{padding:92px 0}
section.alt{background:var(--bg-alt)}
.intro{max-width:62ch;color:var(--ink-soft);font-size:1.1rem;margin-bottom:48px}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px}
.card .num{display:inline-flex;width:40px;height:40px;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;align-items:center;justify-content:center;margin-bottom:18px}
.card p{color:var(--ink-soft);margin:0 0 14px}
.card ul{margin:0;padding-left:1.1em;color:var(--ink-soft);font-size:.97rem}
.card li{margin-bottom:4px}
.card li::marker{color:var(--accent)}

/* references */
.refs{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.refs .card{background:var(--bg-alt);border-color:transparent}
.tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-dark);margin-bottom:12px}
.tag.ai{color:#fff;background:var(--accent-dark);padding:2px 10px;border-radius:999px;letter-spacing:.06em}

/* AI process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s;border-top:2px solid var(--ink)}
.step{padding:28px 24px 8px 0;position:relative}
.step::before{counter-increment:s;content:"0" counter(s);display:block;font-weight:700;color:var(--accent-dark);margin-bottom:10px}
.step::after{content:"";position:absolute;top:-8px;left:0;width:14px;height:14px;border-radius:50%;background:var(--accent)}
.step p{color:var(--ink-soft);font-size:.97rem;margin:0}

/* principles */
.split{display:grid;grid-template-columns:1fr 1.3fr;gap:64px;align-items:start}
.principles{display:grid;gap:22px}
.principles div{padding-left:22px;border-left:3px solid var(--accent)}
.principles p{margin:0;color:var(--ink-soft)}

/* facts */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.fact{border-top:2px solid var(--ink);padding-top:14px}
.fact b{display:block;font-size:1.9rem;letter-spacing:-.02em}
.fact span{color:var(--ink-soft);font-size:.95rem}

/* contact */
.contact{background:var(--night);color:#fff}
.contact .eyebrow{color:var(--accent)}
.contact p{color:#c3d0db;max-width:52ch}
.contact a.mail{display:inline-block;margin-top:12px;font-size:clamp(1.4rem,3vw,2rem);font-weight:700;color:#fff;text-decoration:none;border-bottom:3px solid var(--accent)}
.contact a.mail:hover{color:var(--accent)}

.contact .social{margin-top:28px}
.contact .social a{color:#c3d0db;font-weight:600;text-decoration:none}
.contact .social a:hover{color:var(--accent)}

/* právne stránky */
.legal{padding:64px 0 88px}
.legal .wrap{max-width:780px}
.legal h1{font-size:clamp(1.9rem,4vw,2.6rem);margin-bottom:.2em}
.legal h2{font-size:1.4rem;margin:2em 0 .5em}
.legal h3{font-size:1.05rem;margin:1.4em 0 .3em}
.legal p{color:var(--ink-soft);margin:0 0 1em}
.legal .updated{font-size:.9rem}
.legal code{background:var(--bg-alt);padding:1px 6px;border-radius:5px;font-size:.88em}

/* cookie lišta */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:50;max-width:760px;margin:0 auto;background:var(--ink);color:#e6edf2;border-radius:var(--radius);padding:18px 22px;display:flex;gap:20px;align-items:center;justify-content:space-between;box-shadow:0 10px 40px rgba(0,0,0,.3);font-size:.93rem}
.cookie[hidden]{display:none}
.cookie p{margin:0;line-height:1.5}
.cookie div{display:flex;gap:10px;flex-shrink:0}
.cookie button{font:inherit;font-weight:650;padding:9px 18px;border-radius:999px;border:1px solid #4b6479;background:transparent;color:#fff;cursor:pointer}
.cookie button:hover{border-color:#fff}
.cookie button.primary{background:var(--accent);border-color:var(--accent);color:#04202a}
.cookie button.primary:hover{background:#2cc4e6}
footer a{color:#b4c5d2}
@media (max-width:600px){.cookie{flex-direction:column;align-items:stretch}.cookie div{justify-content:flex-end}}

footer{background:#07121d;color:#8fa3b3;font-size:.88rem;padding:36px 0}
footer .wrap{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
footer b{color:#d5e0e8}

@media (max-width:900px){
  .grid3,.steps,.facts,.split,.refs{grid-template-columns:1fr}
  .split{gap:32px}
  .step{padding-bottom:24px}
  .hero svg{opacity:.35;width:100%;right:-30%}
  nav a:not(.cta){display:none}
  section{padding:64px 0}
}